package com.glb.gilibuy.web.mall;

import com.alipay.api.AlipayApiException;
import com.alipay.api.AlipayClient;
import com.alipay.api.DefaultAlipayClient;
import com.alipay.api.internal.util.AlipaySignature;
import com.alipay.api.internal.util.StringUtils;
import com.alipay.api.request.AlipayTradePagePayRequest;
import com.glb.gilibuy.config.AlipayConfig;
import com.glb.gilibuy.entity.UserOrder;
import com.glb.gilibuy.util.MapGenerator;
import com.glb.gilibuy.util.QRCodeUtil;
import com.glb.gilibuy.web.BaseController;
import com.glb.gilibuy.web.vo.UserVO;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.*;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;

/**
 * @Description:
 * @Author: Yupeng Zhang
 * @Date: 2021-08-06 9:26
 */
@Api(tags = "支付模块")
@Controller
public class PayController extends BaseController {
    @ApiOperation(value = "支付宝支付", notes = "调用支付宝接口进行支付", produces = "application/json")
    @PostMapping("/user/goPay")
    @ResponseBody
    public String goPay(@RequestParam("orderId") String orderId,
                        HttpServletResponse response,
                        HttpSession httpSession) {

        UserOrder order = orderService.selectOrderByOrderId(orderId);

        if (order == null) {
            //中文？？？
            response.setContentType("text/html;charset=GBK");
            return "{\n" +
                    "  \"msg\": \"The order does not exist!\",\n" +
                    "  \"status\": 500\n" +
                    "}";
        }

        UserVO userTemp = (UserVO) httpSession.getAttribute("user");

        if (!order.getUserId().equals(userTemp.getUserId())) {
            response.setContentType("text/html;charset=GBK");
            return "{\n" +
                    "  \"msg\": \"The user has no authority to pay this order!\",\n" +
                    "  \"status\": 501\n" +
                    "}";
        }

        if (order.getOrderState() != 0) {
            response.setContentType("text/html;charset=utf-8");
            return "{\n" +
                    "  \"msg\": \"The order status is not zero!\",\n" +
                    "  \"status\": 502\n" +
                    "}";
        }

        //获得初始化的AlipayClient
        AlipayClient alipayClient = new DefaultAlipayClient(AlipayConfig.gatewayUrl, AlipayConfig.app_id, AlipayConfig.merchant_private_key, "json", AlipayConfig.charset, AlipayConfig.alipay_public_key, AlipayConfig.sign_type);

        //设置请求参数
        AlipayTradePagePayRequest alipayRequest = new AlipayTradePagePayRequest();
        alipayRequest.setReturnUrl(AlipayConfig.return_url);
        alipayRequest.setNotifyUrl(AlipayConfig.notify_url);

        //商户订单号，商户网站订单系统中唯一订单号，必填
        String out_trade_no = orderId;
        //付款金额，必填
        String total_amount = String.valueOf(order.getOrderPrice());
        //订单名称，必填
        String subject = "gilibuy购物";
        //商品描述，可空
        String body = "";

        // 该笔订单允许的最晚付款时间，逾期将关闭交易。取值范围：1m～15d。m-分钟，h-小时，d-天，1c-当天（1c-当天的情况下，无论交易何时创建，都在0点关闭）。 该参数数值不接受小数点， 如 1.5h，可转换为 90m。
        String timeout_express = "1c";

        alipayRequest.setBizContent("{\"out_trade_no\":\"" + out_trade_no + "\","
                + "\"total_amount\":\"" + total_amount + "\","
                + "\"subject\":\"" + subject + "\","
                + "\"body\":\"" + body + "\","
                + "\"timeout_express\":\"" + timeout_express + "\","
                + "\"product_code\":\"FAST_INSTANT_TRADE_PAY\"}");
//        //存订单号和订单信息到request
//        request.setAttribute("QRCodeMsg", "{\"订单号\":\"" + out_trade_no + "\","
//                + "\"支付总额\":\"" + total_amount + "\","
//                + "\"订单名称\":\"" + subject + "\","
//                + "\"商品描述\":\"" + body + "\"}"
//                + "虚拟商品兑换码为：" + QRCodeUtil.createCode());
//        request.setAttribute("orderId", orderId);
//        //存二维码信息
//        try {
//            QRCodeUtil.encode(
//                    //二维码中的信息
//                    "{\"订单号\":\"" + out_trade_no + "\","
//
//                            + "虚拟商品兑换码为：" + QRCodeUtil.createCode(),
//                    //二维码中间图片的位置
//                    "C:\\Users\\HUAWEI\\Desktop\\giligil-QRCode\\logo.JPG",
//                    //输出二维码的位置
//                    "C:\\Users\\HUAWEI\\Desktop\\giligil-QRCode\\订单" + out_trade_no + "的兑换码" + ".JPG",
//                    true);
//        } catch (Exception e) {
//            e.printStackTrace();
//        }
//        try {
//            QRCodeUtil.encode(
//                    //二维码中的信息
//                    "{\"订单号\":\""+ out_trade_no +"\","
//                    + "\"支付总额\":\""+ total_amount +"\","
//                    + "\"订单名称\":\""+ subject +"\","
//                    + "\"商品描述\":\""+ body +"\"}"
//                    + "虚拟商品兑换码为："+QRCodeUtil.createCode(),
//                    //二维码中间图片的位置
//                    "C:\\Users\\HUAWEI\\Desktop\\giligil-QRCode\\logo.JPG",
//                    //输出二维码的位置
//                    "C:\\Users\\HUAWEI\\Desktop\\giligil-QRCode\\订单"+orderId+"的兑换码"+".JPG",
//                    true);
//        } catch (Exception e) {
//            e.printStackTrace();
//        }
        //请求
        String result = null;
        try {
            result = alipayClient.pageExecute(alipayRequest).getBody();
        } catch (AlipayApiException e) {
            e.printStackTrace();
        }
        response.setContentType("text/html;charset=" + AlipayConfig.charset);
        //直接将完整的表单html输出到页面
        try {
            response.getWriter().write(result);
            response.getWriter().flush();
            response.getWriter().close();
        } catch (IOException e) {
            e.printStackTrace();
        }

        return result;
    }

    //没调用的接口
    @ApiOperation(value = "支付通知(停用)", notes = "支付通知(停用)", produces = "application/json")
    @PostMapping("/notify_url")
    @ResponseBody
    public Map<String, Object> notifyUrl(HttpServletRequest request) throws UnsupportedEncodingException, AlipayApiException {
        //获取支付宝POST过来反馈信息
        Map<String, String> params = new HashMap<String, String>();
        Map<String, String[]> requestParams = request.getParameterMap();
        for (Iterator<String> iter = requestParams.keySet().iterator(); iter.hasNext(); ) {
            String name = (String) iter.next();
            String[] values = (String[]) requestParams.get(name);
            String valueStr = "";
            for (int i = 0; i < values.length; i++) {
                valueStr = (i == values.length - 1) ? valueStr + values[i]
                        : valueStr + values[i] + ",";
            }
            //乱码解决，这段代码在出现乱码时使用
            valueStr = new String(valueStr.getBytes("ISO-8859-1"), "utf-8");
            params.put(name, valueStr);
        }

        boolean signVerified = AlipaySignature.rsaCheckV1(params, AlipayConfig.alipay_public_key, AlipayConfig.charset, AlipayConfig.sign_type); //调用SDK验证签名

        //——请在这里编写您的程序（以下代码仅作参考）——

	/* 实际验证过程建议商户务必添加以下校验：
	1、需要验证该通知数据中的out_trade_no是否为商户系统中创建的订单号，
	2、判断total_amount是否确实为该订单的实际金额（即商户订单创建时的金额），
	3、校验通知中的seller_id（或者seller_email) 是否为out_trade_no这笔单据的对应的操作方（有的时候，一个商户可能有多个seller_id/seller_email）
	4、验证app_id是否为该商户本身。
	*/
        System.out.println("signVerified：" + signVerified);
        if (signVerified) {//验证成功

            //商户订单号
            String out_trade_no = new String(request.getParameter("out_trade_no").getBytes("ISO-8859-1"), "UTF-8");

            //支付宝交易号
            String trade_no = new String(request.getParameter("trade_no").getBytes("ISO-8859-1"), "UTF-8");

            //交易状态
            String trade_status = new String(request.getParameter("trade_status").getBytes("ISO-8859-1"), "UTF-8");

            System.out.println("支付状态：" + trade_status);

            if (trade_status.equals("TRADE_FINISHED")) {
                //判断该笔订单是否在商户网站中已经做过处理
                //如果没有做过处理，根据订单号（out_trade_no）在商户网站的订单系统中查到该笔订单的详细，并执行商户的业务程序
                //如果有做过处理，不执行商户的业务程序
                System.out.println("a");
                //注意：
                //退款日期超过可退款期限后（如三个月可退款），支付宝系统发送该交易状态通知
            } else if (trade_status.equals("TRADE_SUCCESS")) {
                //判断该笔订单是否在商户网站中已经做过处理
                //如果没有做过处理，根据订单号（out_trade_no）在商户网站的订单系统中查到该笔订单的详细，并执行商户的业务程序
                //如果有做过处理，不执行商户的业务程序
                System.out.println("b");
                //注意：
                //付款完成后，支付宝系统发送该交易状态通知
            }
            System.out.println("c");
            //生成二维码
            try {
                QRCodeUtil.encode(
                        //二维码中的信息
                        "{\"订单号\":\"" + out_trade_no + "\","

                                + "虚拟商品兑换码为：" + QRCodeUtil.createCode(),
                        //二维码中间图片的位置
                        "C:\\Users\\HUAWEI\\Desktop\\giligil-QRCode\\logo.JPG",
                        //输出二维码的位置
                        "C:\\Users\\HUAWEI\\Desktop\\giligil-QRCode\\订单" + out_trade_no + "的兑换码" + ".JPG",
                        true);
            } catch (Exception e) {
                e.printStackTrace();
            }

            return MapGenerator.getRes(200, "支付成功！");
        } else {//验证失败

            return MapGenerator.getRes(500, "支付失败！");
            //调试用，写文本函数记录程序运行情况是否正常
            //String sWord = AlipaySignature.getSignCheckContentV1(params);
            //AlipayConfig.logResult(sWord);
        }
    }

    @ApiOperation(value = "支付返回", notes = "支付返回", produces = "application/json")
    @GetMapping("/return_url")
    public String returnUrl(HttpServletRequest request) throws UnsupportedEncodingException, AlipayApiException {

        //获取支付宝GET过来反馈信息
        Map<String, String> params = new HashMap<String, String>();
        Map<String, String[]> requestParams = request.getParameterMap();
        for (Iterator<String> iter = requestParams.keySet().iterator(); iter.hasNext(); ) {
            String name = (String) iter.next();
            String[] values = (String[]) requestParams.get(name);
            String valueStr = "";
            for (int i = 0; i < values.length; i++) {
                valueStr = (i == values.length - 1) ? valueStr + values[i]
                        : valueStr + values[i] + ",";
            }
            //乱码解决，这段代码在出现乱码时使用
            valueStr = new String(valueStr.getBytes("ISO-8859-1"), "utf-8");
            params.put(name, valueStr);
        }

        boolean signVerified = AlipaySignature.rsaCheckV1(params, AlipayConfig.alipay_public_key, AlipayConfig.charset, AlipayConfig.sign_type); //调用SDK验证签名

        System.out.println("signVerified：" + signVerified);
        //——请在这里编写您的程序（以下代码仅作参考）——
        if (signVerified) {
            //商户订单号
            String out_trade_no = new String(request.getParameter("out_trade_no").getBytes("ISO-8859-1"), "UTF-8");

            //支付宝交易号
            String trade_no = new String(request.getParameter("trade_no").getBytes("ISO-8859-1"), "UTF-8");

            //付款金额
            String total_amount = new String(request.getParameter("total_amount").getBytes("ISO-8859-1"), "UTF-8");

            System.out.println("trade_no:" + trade_no + "<br/>out_trade_no:" + out_trade_no + "<br/>total_amount:" + total_amount);
            //return MapGenerator.getRes(200, "trade_no:" + trade_no + "<br/>out_trade_no:" + out_trade_no + "<br/>total_amount:" + total_amount);
        } else {
            //return MapGenerator.getRes(500, "验签失败！");
        }

        //——请在这里编写您的程序（以上代码仅作参考）——
        String[] out_trade_nos = requestParams.get("out_trade_no");
        String out_trade_no = out_trade_nos[0];
        System.out.println("out_trade_no：" + out_trade_no);
        if (!StringUtils.isEmpty(out_trade_no)) {
            UserOrder userOrder = new UserOrder();
            userOrder.setOrderId(out_trade_no);
            //订单状态设为1(已支付)
            userOrder.setOrderState(1);
            //支付方式设为1(支付宝)
            userOrder.setPaymentType(1);
            Map<String, Object> res = orderService.updateOrder(userOrder);
            if (res.get("status").equals(200)) {
                //虚拟商品生成二维码，一旦生成交易自动完成
                orderItemService.createQrCode(out_trade_no);
                //更改成功，返回到主页
                return "mall/home";
            }
        }
        //非法访问返回500页面
        return "error/500";
    }

    @ApiOperation(value = "免费支付", notes = "免费支付", produces = "application/json")
    @PostMapping("/user/freePay")
    @ResponseBody
    public Map<String, Object> freePay(@RequestParam("orderId") String orderId,
                                       HttpSession httpSession) {
        UserOrder order = orderService.selectOrderByOrderId(orderId);
        if (order == null) {
            return MapGenerator.getRes(500, "订单不存在！");
        }

        UserVO userTemp = (UserVO) httpSession.getAttribute("user");
        if (!order.getUserId().equals(userTemp.getUserId())) {
            return MapGenerator.getRes(501, "无权限支付！");
        }

        if (order.getOrderState() != 0) {
            return MapGenerator.getRes(500, "订单状态不为待支付！");
        }

        UserOrder userOrder = new UserOrder();
        userOrder.setOrderId(orderId);
        //订单状态设为1(已支付)
        userOrder.setOrderState(1);
        //支付方式设为1(支付宝)
        userOrder.setPaymentType(1);
        Map<String, Object> res = orderService.updateOrder(userOrder);
        if(res.get("status").equals(200)){
            //虚拟商品生成二维码，一旦生成交易自动完成
            orderItemService.createQrCode(orderId);
            return MapGenerator.getRes(200,"免费支付成功！");
        }
        return res;
    }
}
